Dump-car.



R. MOKNIGHT.

DUMP GAB..

APPLICATION FILED FB.1,1908

' Patented May 4,1909.

4 SHEETS-#SHEET l.

T. R. IVIoKlIGfHU.

DUMP GAR.

APPLICATION PILPD PBB.1,1908.

Patented May ,4, 1909.

4 SHEBTS--BEEET 2.

l l Lm l l l l v 4 lll (i 1 l i I J mi T. R. MOKNIGHT.

DUMP GAR, APPLICATION AFILED IFBB. 1, 190B.

Patented May 4, 1909.

y T. R. MUKNIGHT.

DUMP GAB. A'PPLIOATION FILED PEB; 1,1908.

Patted. May

1909. 4 SHEETS-SHEET 4.

- may have its load nearer to one side than the) UNITED OFFICE..

THOMAS R. MCKNIGHT, OF AURORA, ILLINOIS, ASSIGNOR l`O WESTERN WHEELED SCRAPER COMPANY, OF AURORA, ILLINOIS, A CORPORATION OF ILLINOIS.

DUMP-can.

To all whom it may concern:

Be it known that I, THov'MAs R. MOKNIGHT, a citizen of the UnitedStates, residing at Aurora, in the county of Kane and State of Illinois, have invented certain new and use- .ful Improvements in Dump-Cars, oli which the fol owing 1s a specification, reference bei had to the accompanying drawings.

Iy invention relates to dump-cars, and has articular-ly to do with cars arranged to umped by .means of compressed air.

i he principal objects of my invention are to provide for dumping the cars by direct pull at the side at which the load is t'o be dumped so that the car-body may be properly tilted and heldl in its tilted position until the load may bescraped out; and also to provide for economizing the amount of compressed air employed in dumping the several cars'of a train by employing only so much air for any given car as is necessary to dump that car. As is well known, the several cars lof a train do not all require the same amount of power for dumping them. One car may have a light load, another car other, and still others might have heavy loads or loads distributed uniformly throughout the oar, more easily at one side than at the other of the train.l In fact, the precise amount of power necessary to be exerted to dump the several cars is never the same for all of them. It will be seen, therefore, that where the cars are arranged to be dumped by air pressure sup lied From the locomotive `it is very desira le that only so much air pressure be applied to any given car asis necessary to dump its load, and this I accomplish by my invention. In the accompanying drawings,hFigui-e 1 is a side elevation of a dump-car embodying my improvements; Fig. 2 is a plan view, the body of the car being removed and certain parts being in section; Fig. 3 is a crosssection on line 3,-3 of Fig. 2; Fig. 4 is an enlarged detail in side elevation, showing a part of the mechanism for automatically controlling the compressed air supply Fig. 5 is a plan View of the same; Fig.A 6 is a section on line 6 6 of Fig. 4; Fig.. 7 is a plan Fig. 8 is a' view of the air shut-ofi valve; horizontal sectlon thereoi Fig. 9 1s a section on line 9-9 of Fig. 8; Fig. 10 1s a section on Specification of Letters Patent. i Application filed February 1, 14908.

so that certain cars would dum that is to say,

Patented May 4, 1909. Serial No. 413,861.

line 10-10 of Fig. 8; and Fig. 11 is a side elevation indicating diagrammatically the arrangement ol a train of cars equipped with my improved dumping mechanism.

Referring to the drawings,11 indicates the car-body, which, in the construction shown, is provided with two trucks 12-13, but it may be vof any other approved form. The car-body is mounted so as to tilt laterally at either side,-this being accomplished, in the construction shown,` by mounting it upon pivotal supports 14 placed at intervals under thevbody of the car, as best shown in Fig. 1. It will be understood that the trucks 12,-,13 are connected by suitable framethe usual connections 20 for connecting them with the corresponding pipes of other ears. Said connections are provided with valves 21, by which they may -be closed. The train-pipe 18 is for supplying compressed air to dump the load at'one side of the car, and the pipe 19 -for performing a similar office atl the other side.

22-23 indicate cylinders placed at the op-L posite sides of the car and near opposite ends thereof, as shown in Fig. 2. Said cylinders are employed respectively for dumping the car at one sideor the other.

24 indicates a pipe leading from the trainpipe 19 to the cylinder 22, said pipe being provided With a combination cut-off and check-valve 25, as best shown in Fig. 1. The construction of said valve will be hereinafter explained. In like manner .the cylinder 23 is connected with the train-pipe 18 by a pipe 26 having a similar valve 27, as shown in Fig. 2. The connection of the train-pipes, respectively, with the' cylinders 22h23 is made at the outer ends of said cylindersthe ends nearest the ends ofthe car-so that compressed airis admitted to said cylinders at or near their outer ends.

28 indicates a piston-head in the cylinder 22 having a piston-rod 29 which extends through the inner head of the c linder, moving longitudinally of the car. aid piston-rod is connected at its vouter end with a cross-head or being suitably supported at the side of the carl By this construction the cross-head 3() issupported and guided as it moves longitudinally of the car under the action of the compressed air in the cylinder by which it is operated. The cross-head 30 is provided with a laterally-projecting arm 33, as best shown in Figs. 4, 5 and 6.

34 indicates a cable connected. with the cross-head 30, as shown in Figs. 4 and- 5, and extending around pulleys 35, 36 and 37, best shown in Figs. 1, 2 and 3,-its opposite ends being connected with the side of the car near one end thereof. 38 indicates another cable also connected with the cross-head 3() and extending around pulleys 39-40 and being connected at its end with the side of the car nearthe oppositer end thereof, as shown in Figl. By the arrangement of the cables and pulleys shownv it will be seen that when the piston in the cylinder 22 moves in one directlon--as to the left in Fig. -l-it will operate through the cables 34-88 to pull down on that side of the car-body to which the cables are connected, thereby dumpino' the car-body at that side. Movement of the piston in the opposite direction slackens the cables 34*38, permitting the car-body to return to its horizontal. or normal position under the action of the cylinder at the opposite side of the car, as hereinafter described. It will be understood that the cylinder 23 is also provided with a piston 41 similar to the piston 28 and having a piston-rod 42 cennected with .a cross-head 43 which is pro,

being arranged and operating in `the same.

parts at the oppocheck-valves 25 and 27 hereinbefore referred to is best shown in Figs. 7 to 10. As therein shown, said valve is provided with a straight way 51 controlled by an ordinary key 52 and with a byass A53 controlled by a s ringseated chec -valve 54 best shown in Fig. 0. As shown. in Figs. 8 and 9, the check-valve 54 is seated intermediatehr in the by-pass between the end portions thereof, which are on diiierent levels,l as indicated at 53a and 53h. 'lhe check-valve 54. is arranged to permit air to pass ont of the cylinder with which it is connected, but prevents the admission et' air to said cylinder through the by-pass.

55 indicates a lever connected with the key of the valve 25, and 56 a similar lever connected with the key of the valve 27. Said levers are for rotating their respective keys to open or close the direct passages through their respective valves.

57 indicates a rod connected at one end with the valve lever 55 and at the opposite end with a bifurcated rocking'dever 58 lpivoted to a suitable support 59 preferably secured to the I-beam 15 and projecting under the path of the cross-head 30, as best shown in Fig. 6. rocking-lever 58 is such that when it is in the position shown in Fig. 4 one of its arms 60is in the path of the arm 33,-its other arm 6l being then inclined suflicient'ly to carry it below the path of said arm 33, as also shown in Fig. 4. This is -the position of the lever 58 when the valve 25 is open for the admission of compressed air to the cylinder 22. By

rocking theiever 5S to the left, as shown in Fig. 4, the lever 55 is swung to close the valve 25 against the admission et' compressed air to said cylinder, and in that case the armf swings down below the path of the arm 33,

rllhe arrangement of theV while the arm 61 swings upward into the path of said arm 33.

It will be seen from the foregoing deseripi tion that when the parts are in the 4position shown in the drawings and compressedyair is admitted to cylinder 22 through trainipe 1), the'cross-head 30 will move to the lleft, its arm 33 passing over the arm 6l of lever 58, and this movement of the eross-head 30 will operate through cables i4-T38 to pull down on the adjagent side ofthe earebody and thereby dump the load; When the cross-head 3() approaches the limit of its movement its 33 will strike arm 60 of vlever 58, thereby. swinging said leverto Ithe left and operating lever 55 to close the main passage through valve25, thereby'preventmg the further admission of compressed air to cylinder' 22. When the lever 58 swings to the left, as described, its arm 61 is carried up into the path of arm 33 so that when the movement ot the crossfhead 30 is reversed the arm 33 n ill operate to return the lever 58 to its original position, thereby again open# ing the main passage through' the valve 25. Ifhe escape of compressed air from cylinder 22l is permitted while the main through valve 25 remains closed, y the check-valve 54, which, as has been explained,

assage iinally with the engine, which is provided IPreferably I employ a valve having the construction shown and described in my pending application No. 397 ,152, filed October 12, 1907. After the load has been dumped at one side of the car, the car-'bodyis restored to its normal position by admitting air to the cylinder at the opposite side,-the staychains 62 which are usually provided serving to keep the car-body from swinging to the opposite side when beingrighted, Before dumping it is, of course, necessary to. release the stay-chains at the side opposite that at which the load is to be dumped.

By my improved construction I not only provide a direct pull at'either side of the car or dumping purposes and avoid the use of levers, rock-shafts or other similar devices, but I also amable to economize very materially in the use of com ressed air, since, obviously, as soon as su cient air has been admitted to any cylinder to dumpthe car-bodyv operated b 1t, the further admission of air to that cylin er is at once out off regardless of tlm condition of any other carin the train. Se far as I am aware, this has never before been accomplished -and is claimed broadly. In other res ects also my invention is not restricted to t e specific devicesillustrated and described, but includes generically the subject-matter of the broader claims.

That which I cla'im as my invention, and

desire to secure by Letters Patent, 'is,-

1. dump-car having a car-body arranged to dum at either side compressed-air-operated dumping-mechanism adapted to be actuated to tilt the car-body at either side, Aand means for automatically shutting ofl' the supply of compressed air when the load is dumped.

2. The combination of a plurality of dump-cars each having a car-body arranged to dump at either side, com ressed-air-operated dumping-mechanisme apted to be actuated to tilt the car-body at either side,"-a

trainipe for sup lying compressedair to said crimping-mec amsms, and means for automatically cuttlng olf the supply of compressed air from any dumping-mechanism -when the car o erated by it is dumped.

3. The com iination of a plurality of dump-cars each having a car-body arranged to dump at either side, compressed-air-operl'ated dumping-mechanism adapted to lie actuated to tilt the car-body at either side, a train-pipe connectingr said dumping-mechanisms, a valve for admitting compressed air to said train-pipe and releasing the pressure therein, and means for automatically cutting off the dumping-mechanism of any car from said train-plpe-'whcn such car is dumped.

vtornatically 4 The combination of a plurality of dump-cars, each of said cars having a car- .body arranged to dump at either side, compressed-air-operated dumping mechanisms for dumping the load at opposite sides thereof, train-pipes connected with said dumpingmechanisms, means for admittingcompressed air to one or the other of said trainpipes, and means for cutting off the supply of compressed air from the dumping-mechanism of any car when said car is dumped.

5. A d ump-car having a car-body arranged to dump at either side, compressed-air-operated dumping-mechanism adapted to be acf tuated to tilt the car-body at either side, a valve for vadmitting compressed air thereto, means for automatically closing said valve n' hen the load is dumped, and means for auopening said valve n hen the carbody is righted.

6. A dump-car having compressed-air-operated dumping-mechanism, a valve for admitting compressed air thereto, means for automatically closing said valve when the lo-ad is dumped, means for automatically opcnin said valve vv hen the car-body is righted, an a check-valve for releasing the )ressure on said dum ping-mechanism'when t e car-body is being righted. f

7. A dump-car having compressed-air-operated dumping-mechanisms for dumping the load at opposite sides thereof, dpipes for supplying compressed'A air tosaid. umpingmechanisms, respectively, cut-off valves for controlling the admission of com ressed air. to said dumping-mechanisms, an means operatedV by the dumping of, the car-'body at either side of the car for closing the -appropriate valve to cutoff the suppl of coml pressed air from the dumping-mec anism by which such dumping'was effected.

8. A dump-ear having, compressed-air-operated dumping-mechanisms.' for dumping the load at-opposite sides `thereof, ipes for supplying compressed air. to, said umpingmechanisms, respectively, cut-ofi1l valves for controlling the admission of compressed air to said dumping-mechanisms,means operated by the dumping of the car-body at either side rof the car for closingfthe appropriate valve to cut off the suppl I of comwhen it has been actuated to duinp the load and for automaticalhV opening said. eut-oil s, ton for dumping the load, one or more ca les connected with said piston and with the side of the car7 and pulleys for guiding said cable so that movement of the piston in one direction operates to pull down on one side of the car to dump the load.

11.. A d ump-ear having a pair of cylinders and pistons for dumping the load at either side of the car, cables connected with said pistons, respectively, and with the opposite sides of the ear, and guide pulleys for said cables whereby by appropriate/l f moving said pistons said cables are operate to pull down on either side of the ear to. dump the load or to right the car-body.

12. A dump-ear having a tilting car-bod a cylinder, and a piston movable longitudinal y of the car for dumping the load, one or more cables connected with said piston and with the side of the ear, and pulleys for guiding said cables so that movement of the' piston in one direction operates to pull down on .one side of the car to dump the load.

13. A dump-ear having a laterally-tilting earbody, a air of cylinders, and pistons movable longitudinally of the ear for dumping the' load at either side of the ear4 cables connected with said pistons respeetively and with the opposite si( es of the ear, and guide pulleys for said cables whereby by appmpri` ately movin said pistons said Cables are op :1

erated to p11 l down on either side of the car to dump the load or to right the ear-body.

14. A dun1)ear comprising a late1allytilting ca1-bo y having central pivotal sup ports, a cylinder, and a-piston movable longitudinally of the car for dumping the load., one or more cables connected -with said piston and with the side of the ear, and means for guiding said cable so that movement oli the piston in one direction operates to pull down on one side ofthe ear to dump tl e load.

15. A dunii-car oomprisin a la erally tilting ear-body having centra pivotal supe ports and arranged to tilt at either side o the car, a pair of cylinders, andpistmis inem. f;

able longitudinally of the car for duwg the load at either side, Cables counseled v said pistons respectively and with lfe opposite sides of the car, and means for @raiding said cables whereby by aiuiropriateiy movin said pistons said cables operated to pu down on either side oi' the ear to dump the load or to right vthe ear-body.

- THOMAS R. MOKNU? Vl'l`.

Witnesses:

J. B. STUART,

BEREMAN. 

